diff options
Diffstat (limited to 'theories/NArith/Nnat.v')
| -rw-r--r-- | theories/NArith/Nnat.v | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/theories/NArith/Nnat.v b/theories/NArith/Nnat.v index 1b7e2f241..346169e7f 100644 --- a/theories/NArith/Nnat.v +++ b/theories/NArith/Nnat.v @@ -113,7 +113,7 @@ Proof. Qed. Lemma inj_iter a {A} (f:A->A) (x:A) : - N.iter a f x = nat_iter (N.to_nat a) f x. + N.iter a f x = nat_rect (fun _ => A) x (fun _ => f) (N.to_nat a). Proof. destruct a as [|a]. trivial. apply Pos2Nat.inj_iter. Qed. @@ -194,7 +194,7 @@ Lemma inj_max n n' : Proof. nat2N. Qed. Lemma inj_iter n {A} (f:A->A) (x:A) : - nat_iter n f x = N.iter (N.of_nat n) f x. + nat_rect (fun _ => A) x (fun _ => f) n = N.iter (N.of_nat n) f x. Proof. now rewrite N2Nat.inj_iter, !id. Qed. End Nat2N. |